Extending the zone of safe and free society is definitely in our interests. I don't know when it became in vogue to openly shit on the Democratic Peace Theory, but it's certainly not for a lack of evidence. I guess it's something that you people have committed us to relearning.
But you didn't extend the zone of safe and free society; if anything, you reduced it. And it's not like you can claim it was an unforeseen consequence: Russia told you explicitly that they would "take military and other steps along its borders if ex-Soviet Ukraine and Georgia join NATO" [1], an then they proceeded to do just that in Georgia [2].
So you poked the bear without having any way to contain it, and you shouldn't be surprised that people blame you for it having razed the village.